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We report an enhanced experimental set-up that allows fast and accurate determination of refractive indexes in optical materials. The set-up is equipped with the high-precision sample positioning system and sensitive detector for the registration of interference fringes shift. Additionally, an approach that can be utilized in order to eliminate the error caused by non-parallel sample edges is discussed. The results of the refraction index measurements in lithium niobate are presented.
Date of Conference: 10-14 Sept. 2010